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ACE707A 데이터시트 PDF




ACE Technology에서 제조한 전자 부품 ACE707A은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 ACE707A 기능
기능 Micro Power Step-up DC-DC Converter
제조업체 ACE Technology
로고 ACE Technology 로고


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ACE707A 데이터시트, 핀배열, 회로
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ACE707A                                                                                                                                                                         
                                              Technology
Micro Power Step-up DC-DC Converter
Description
The ACE707A are Pulse Frequency Modulation (PFM) DC/DC converters. These two devices are
functionally equivalent except the switching current limit. The ACE707A is for lower power systems with
100mA current limit.
The ACE707A feature a wide input voltage. The operation voltage is ranged from 1V to 12V. A current
limited, fixed off-time control scheme conserves operating current, resulting in high efficiency over a broad
range of load current. They also feature low quiescent current, switching current limiting, low temperature
coefficient, etc.
Fewer tiny external components are required in the applications to save space and lower cost.
Furthermore, to ease its use in different systems, a disable terminal is designed to turn on or turn off the
chip.
The ACE707A are available in SOT-23-5 package.
Features
Low Quiescent Current In Active Mode (Not Switching): 17μA Typical ,In Shutdown Mode: < 1μA
Low Operating VIN 1.0V Typical for ACE707A
Low VCESAT Switch 70mV Typical at 70mA for ACE707A
High Output Voltage: up to 34V
Fixed Off-Time Control
Switching Current Limiting 100mA Typical for ACE707A
Operating Temperature Range: -40to 85
Application
MP3, MP4
Battery Power Supply System
LCD/OLED Bias Supply
Handheld Device
Portable Communication Device
VER 1.2 1 




ACE707A pdf, 반도체, 판매, 대치품
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ACE707A                                                                                                                                                                         
                                              Technology
Micro Power Step-up DC-DC Converter 
Electrical Characteristics
VIN=VSHDN=1.2V, TA=25, unless otherwise specified.
Parameter
Symbol Test Conditions
Input Voltage
Quiescent Current
VIN
IQ
Not Switching
VSHDN=0V
Feedback Voltage
FB Comparator Hysteresis
FB Pin Bias Current
Output Voltage Line Regulation
Switching Current Limit
Switch Saturation Voltage
Switch Off Time
VFB
VFBH
IFB
LNR
IL
VCESAT
TOFF
VFB=1.23V
1.2V<VIN<12V
ISW=70mA
VFB>1V
VFB<0.6V
SHDN Input Threshold High
VTH
SHDN Input Threshold Low
SHDN Pin Current
Switch Leakage Current
VTL
ISHDN
ISWL
VSHDN=1.2V
VSHDN=5V
Switch Off, VSW=5V
Min Typ Max
1.0 12
17 30
1
1.205 1.23 1.255
8
30 80
0.05 0.1
75 100 125
70 120
400
1.5
0.9
0.25
23
8 12
0.01 5
Unit
V
μA
V
mV
nA
%/V
mA
mV
nS
μS
V
μA
μA
VER 1.2 4

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ACE707A 전자부품, 판매, 대치품
  www.DataSheet4U.com
ACE707A                                                                                                                                                                         
                                              Technology
Micro Power Step-up DC-DC Converter 
The ACE707A contain additional circuitry to provide protection during start-up or under short-circuit
conditions. When the FB pin voltage is lower than approximately 0.6V, the switch off-time is increased to
1.5μs and the current limit is reduced to about 250mA (70mA for ACE707A). This reduces the average
inductor current and helps to minimize the power dissipation in the ACE707A power switch, in the
external inductor and in the diode.
The SHDN pin can be used to turn off the ACE707A and reduce the IQ to less than 1μA. In shutdown
mode the output voltage will be a diode drop below the input voltage.
Typical Application
Vin L1
2.5V to 4.2V
10uH
D1
SS14
Vout
20V
C1
4.7 uF
Vin SW
ACE707A
SHEN
FB
GND
R1
2M
R2
130K
C2
1uF
RLOAD
C1, C2: X5R or X7R Ceramic Capacitor
L1: SUMIDA CDRH4D16FB/NP-100MC or Equivalent
Figure 11. ACE707A Typical Application in LCD/OLED Bias Supply
ACE707A
C1, C2, C3: X5R or X7R Ceramic Capacitor
L1: SUMIDA CDRH4D16FB/NP-100MC or Equivalent
Figure 12. ACE707A Typical Application in 1 or 2 Cells to 3.3V Boost Converter
VER 1.2 7

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관련 데이터시트

부품번호상세설명 및 기능제조사
ACE707A

Micro Power Step-up DC-DC Converter

ACE Technology
ACE Technology

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